SF055XP0

3/4" Stainless Steel Constant Section Bearings

SF055XP0 3/4" Stainless Steel Constant Section Bearings
SF055XP0 3/4" Stainless Steel Constant Section Bearings

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Part No.
Part No. SF055XP0

Basic Information

Bearing type Ball
System of measurement Inch
Thin section bearings type Reali-Slim Stainless Steel
Construction Single Row
Weight 2.5 lbs
Tolerance class ABEC-1
Seal type Open
For load direction Four Point Contact

Main Dimensions

Bore diameter 5.5"
Bore diameter tolerance -0.0010"– 0"
Outside diameter 7"
Outside diameter tolerance -0.0010"– 0"
Width 0.75"
Width tolerance +.000 –.005"

Inner Ring Dimensions

Shoulder diameter inner ring 6.055"

Outer Ring Dimensions

Outer ring small-side face inner diameter 6.445"

Performance

Temperature range -30°C to 110 °C
Radial dynamic load rating 5415 lbf
Radial static load rating 7050 lbf
Axial dynamic load rating 8200 lbf
Axial static load rating 17630 lbf
Dynamic load moment 12696 lbf
Static load moment 22040 lbf
Rated load moment 12 ft-lbf
Lubrication Lubricated
Radial internal clearance 0.0000 – 0.0005"

Materials

Ring material Stainless Steel
Ball material Stainless Steel
Cage material Brass

Environment & Compliance

ROHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
Price: $ 286.62 / each
In Stock

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SF055XP0 Bearing Product Overview & Core Advantages

The SF055XP0 is a Four Point Contact thin section bearing designed for applications demanding high precision and space optimization. Manufactured from stainless steel with a brass cage, it offers excellent corrosion resistance. Its defining feature is its ability to support significant combined loads—simultaneously handling radial, axial, and moment loads—making it an ideal, compact solution for high-rigidity systems. The bearing is pre-lubricated for immediate use and adheres to ABEC-1 precision tolerances, ensuring reliable performance in demanding environments.

SF055XP0 Bearing Model Code Explained, Specifications & Naming Convention

Code Segment Technical Meaning
SF Indicates the Reali-Slim thin-section bearing series.
055 Specifies the bore diameter of 5.5 inches.
XP Denotes the Four Point Contact ball bearing construction.
0 Signifies an Open (non-shielded) seal type.

SF055XP0 Bearing Structural Features & Performance Benefits

Four Point Contact Design: This unique geometry allows a single row of balls to support radial loads, bidirectional axial loads, and high tilting moments, effectively replacing the need for multiple bearing arrangements. This results in a more compact and lightweight assembly.

Thin Section & High Rigidity: With a consistent cross-section (0.75" width across 5.5" to 7" diameters), the bearing minimizes system weight and space without compromising structural integrity, providing high rigidity for precise motion control.

Superior Load Capacity: Engineered for high combined loads, it features a high axial static load rating of 17,630 lbf and a dynamic load moment of 12,696 lbf, making it suitable for applications with complex force vectors.

Corrosion-Resistant Construction: The use of stainless steel for rings and balls, along with a brass cage, ensures long-term performance and reliability in harsh or washdown environments.

SF055XP0 Bearing Typical Application Areas

The SF055XP0 is ideally suited for a wide range of precision machinery and robotics, including:

  • Robotic Arms and Joints: Where compact size, moment load capacity, and high precision are critical.
  • Aerospace Actuation Systems: For gimbals, control surfaces, and other mechanisms requiring lightweight, high-load components.
  • Medical and Semiconductor Equipment: In rotary stages and precision positioning devices that demand corrosion resistance and clean operation.
  • Radar and Communication Antennas: Providing smooth, precise rotation under combined loads.
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